Vol. IX] VAN DENBURGH & SLEVIN— GOPHER-SNAKES 211 



247 



Silsbee, Imperial County 



250 



Colorado River, Mojave County, Arizona 

 Benton, Mono County 



252 



Mecca, Riverside County 



258 



Yuma, Yuma County, Arizona 



263 



Mecca, Riverside County 



The complete scale-counts tog-ether with the lists of locali- 

 ties where the specimens examined by us were secured are 

 given below under the names of the subspecies to which we 

 have referred the specimens. As we already have said, many 

 of these specimens are from the region of geographical inter- 

 gradation and some are so intermediate in character that their 

 reference to one or the other subspecies is largely a matter of 

 convenience, 



Pituophis catenifer catenifer (Blainville) 



Specimens from 78 localities have been studied by us. They 

 represent 29 counties of northern and central California and 

 two of southwestern Oregon. 



1. Berkeley, Alameda County, California 



2. Butte Creek, Butte County, California 



3. Antioch, Contra Costa County, California 



4. Contra Costa, Contra Costa County, California 



5. Moraga Valley, Contra Costa County, California 



6. S. W. Side Mt. Diablo, Contra Costa County, California 



7. San Pablo Valley, Contra Costa County, California 



8. Two miles east of Walnut Creek, Contra Costa County, 

 California 



